0001193125-09-105515 10-Q 5 20090329 20090508 20090508 LAM RESEARCH CORP 0000707549 3559 942634797 DE 0630 10-Q 34 000-12933 09811489 4650 CUSHING BLVD FREMONT CA 94538 5106590200 4650 CUSHING PARKWAY FREMONT CA 94538 10-Q 1 d10q.htm FORM 10-Q EX-31.1 2 dex311.htm RULE 13A-14(A)/15D-14(A) CERTIFICATION (PRINCIPAL EXECUTIVE OFFICER) EX-31.2 3 dex312.htm RULE 13A-14(A)/15D-14(A) CERTIFICATION (PRINCIPAL FINANCIAL OFFICER) EX-32.1 4 dex321.htm SECTION 1350 CERTIFICATION (PRINCIPAL EXECUTIVE OFFICER) EX-32.2 5 dex322.htm SECTION 1350 CERTIFICATION (PRINCIPAL FINANCIAL OFFICER)